Alloy Steel Butt Welding Flange
Material:
Carbon steel (Q235B, A105, 106)
Stainless steel (304, 304L, 316, 316L, 321)
Alloy steel (A335, P5, P11, P91, others)
Standards: ASME B16.5, EN-1092, BS4504, DIN, JIS
Type: SO, WN, PL, BL, TH, SW
Size: DN15-DN1200 (1/2" to 48")
Surface Treatment: Anti-rust oil, Black painting, Yellow varnish, Hot-dipped Galvanized, Electrical galvanized zinc plating
Applications: Water works, Shipbuilding, Petrochemical & Gas industry, Power industry, Valve industry, General pipes connecting projects
Two Factories & 30 titanium metal production lines
21 years of experience in titanium metal manufacturing
Systerm quality with ISO / SGS / TUV quality control.
Delivery term: DHL, FEDEX, Air freight,Sea freight
Annual production: 800 tons
Alloy Steel Butt Welding Flange
XI AN LINHUI IMPORT AND EXPORT Co., LTD produces high-performance alloy steel butt welding flange that satisfy ASME B16.5, EN-1092, BS4504, DIN, and JIS requirements. Our flanges are available in alloy steel grades A335, P5, P11, and P91, carbon steel (Q235B, A105, 106), and stainless steel (304, 304L, 316, 316L, 321).
We offer a variety of types, including SO, WN, PL, BL, TH, and SW, ranging from DN15 to DN1200 (1/2" to 48"). With two facilities, thirty production lines, and twenty-one years of titanium metal manufacturing experience, we supply eight hundred tons annually. Every product undergoes ISO/SGS/TÜV quality control to ensure dependability in demanding applications.
Key Features & Benefits
For vital piping systems, our flange provides exceptional mechanical strength and corrosion resistance. In high-velocity streams, the matching bore design reduces erosion-corrosion by eliminating turbulence.
You gain from the smooth integration with heavy-wall pipes, which guarantees structural integrity in the face of high temperatures and pressures. During fast thermal cycling, thermal fatigue is avoided thanks to the sturdy hub design.
Anti-rust oil, black painting, yellow varnish, hot-dipped galvanized, and electro-zinc plating are some of the surface treatments that improve durability and prolong service life in challenging conditions.
Specifications
| Parameter | Details |
|---|---|
| Material | Carbon Steel (Q235B, A105, 106), Stainless Steel (304, 304L, 316, 316L, 321), Alloy Steel (A335, P5, P11, P91, etc.) |
| Standards | ASME B16.5, EN-1092, BS4504, DIN, JIS |
| Type | SO (Slip On), WN (Weld Neck), PL (Plate), BL (Blind), TH (Threaded), SW (Socket Weld) |
| Size | DN15-DN1200 (1/2" to 48") |
| Surface Treatment | Anti-rust Oil, Black Painting, Yellow Varnish, Hot-dipped Galvanized, Electrical Galvanized Zinc Plating |
| Applications | Waterworks, Shipbuilding, Petrochemical & Gas Industry, Power Industry, Valve Industry, General Pipe Connection Projects |
Manufacturing Process
To form raw alloy steel billets into flange blanks, we use precision forging procedures. Grain structure and mechanical qualities are optimized by the heat treatment procedures of normalizing, quenching, and tempering.
Tight dimensional tolerances for face flatness and bore matching are guaranteed by CNC machining.
Full-penetration butt welding preparation guarantees leak-free joints under cyclic loading.
Final surface treatments are applied based on your application requirements, followed by dimensional inspection and non-destructive testing.
Quality Inspection
Each alloy steel butt welding flange is put through stringent testing procedures. We use eddy current examination to look for surface cracks and ultrasonic testing (UT) to find interior discontinuities.
Dimensional verification verifies adherence to ASME B16.5 tolerances. The efficacy of heat treatment is confirmed by hardness testing. Complete material test certificates (MTC) with full traceability are given to you in accordance with EN 10204 3.1/3.2.
To guarantee openness and quality control, third-party inspection services (SGS, TÜV, BV) are offered upon request.
Alloy Steel Butt Welding Flange Applications
Our flanges help your operations in several vital areas:
Petrochemical and Gas Industry: A smooth bore transition that removes erosion-corrosion pockets is necessary for high-pressure pipelines carrying volatile hydrocarbons at pressures higher than 2000 psi.
Power Generation: Our flanges are essential for preventing creep rupture and thermal fatigue during startup and shutdown cycles in main steam lines that operate at temperatures as high as 1000°F (538°C).
Shipbuilding & Offshore: Our heavy-wall suitable designs enable subsea gas manifolds to withstand bending moments caused by ocean current and external hydrostatic pressure.
Water Works & Valve Industry: For long-term performance, general pipe connection projects require dependable, affordable solutions.
Export Markets
We have successfully exported goods to more than 60 nations and areas. North America, South America, the Middle East, Africa, CIS nations, and Southeast Asia are our main markets.
Our dedication to quality and dependability is demonstrated by our long-standing collaborations with CEFC, PTT, PDVSA, PETROECUADOR, PETRONAS, LUKOIL, and PEMEX. You get access to tried-and-true solutions that top business executives throughout the world rely on.
Why Choose Us
21 Years of Manufacturing Excellence: Our two decades of specialized experience guarantee that you will obtain well-developed, dependable goods supported by established engineering expertise.
Dual Factory Advantage: We can effectively complete requests ranging from 100 kg trial batches to large-scale projects thanks to two production facilities with thirty sophisticated production lines.
Comprehensive Quality Systems: Our steadfast dedication to quality management and ongoing improvement is demonstrated by our ISO 9001:2015, SGS, and TÜV certifications.
Flexible Delivery Options: To accommodate your schedule and financial constraints, we provide DHL, FedEx, air freight, and sea freight.
Direct Mill Pricing: By cutting out middlemen, factory-direct supply lowers your procurement expenses while upholding high standards of quality.
Packaging & Shipping
To protect your investment, we offer professional packaging options. Flanges are placed on wooden pallets or plywood containers and coated in plastic film for safe international transportation.
Rust prevention treatments are done before packaging to ensure product integrity throughout transportation. Clear marking and labeling make inventory management and identification simple.
Shipping options include air freight (5-7 days), sea freight (25-40 days), and rapid courier (3-5 days), depending on the volume and urgency of your transaction. You receive tracking information so you can view the complete shipment.
FAQ
Q: What is the required minimum order quantity?
A: variable minimum order quantity (MOQ) of 100 kg is supported for stock items. Specifications determine custom orders.
Q: Is it possible for you to offer material test certificates?
A: For each batch, we provide EN 10204 3.1/3.2 certificates along with complete chemical composition and mechanical property data.
Q: Do you provide bespoke measurements?
A: Definitely. Our engineering staff can produce flanges in accordance with your specifications and application specifications.
Q: What is the average lead time?
A: Stock products are shipped in three to seven days. 15 to 25 days are needed for standard production. It takes 25–40 days for complex custom orders.
Q: What kind of surface treatment works best in corrosive environments?
A: For long-term outdoor and chemical exposure applications, hot-dipped galvanizing offers excellent corrosion protection.
Request a Quote
Ready to enhance your piping system reliability Alloy Steel Butt Welding Flange? Contact our technical team today for customized solutions tailored to your specifications.
Email us at linhui@lhtitanium.com with your requirements. We respond within 4 hours with competitive pricing and technical recommendations.
